Drawing-pen



G. MAYBE.

DRAWING PEN.

(No Model.)

IFIIIT E /N VENTOH A TTOHNEYS Patented Mam. 17,1891.

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tries.

GEORGE MAYER, OF ORANGE, NEW JERSEY.

DRAWING-PEN.

SPECIFICATION forming part of Letters Patent No. 448,450, dated March 17, 1891. Application filed November 15.1890. Serial llo. 371,522. (N0 model.)

.To @ZZ whom, it may concern.:

Be it known that I, GEORGE Maven, of Orange, in the county of Essex and State of New Jersey, a citizen of the United States, have invented certain new and useful Improvements in DrawingPens, of which the following is a specification.

This invention relates to an improved drawing-pen by which alternately light and heavy lines can be drawn with great facility, so as to expedite the work of the draftsman in drawing shade-lines, border-lines, dre.; and the invention consists of a drawing-pen having an auxiliary blade that is guided parallel with and alongside of one of the regular blades of the drawing-pen and provided with a thumbrest by which the auxiliary blade is moved forward or backward, as required for use.

The invention consists further of certain details of construction, which will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure l represents a side elevation of my improved drawing-pen. Fig. 2 is also a side elevation taken at right angles to the former Fig. 3 is a vertical transverse section on the line 3 3, Fig. l; and Fig. 4. is a horizontal section on the line 4. 4, Fig.

Similar letters of reference indicate corresponding parts.

AA in the drawings represent an ordinary drawing-pen, which is attached to the tubular end B of the handle Parallel with and alongside of one of the blades of the drawing-pen A extends an auxiliary blade C, the shank C' of which is connected with a guide-piece C2 of round or other shape, whose cross-section corresponds to the cross-section of the tubular end B' of the handle, according as desired. The connection between the shank O of the auxiliary blade O and the guide-piece C2 is preferably/made by a narrow intermediate strip d and screws d', said intermediate strip being guided in a longitudinal slot (Z2 of the tubular portion B of the handle. The auxiliary blade O is provided with a set-screw D, the threaded shank of which passes through the slot d2 and engages the guide-piece C2, said screw serving to press the auxiliary blade() against the ad joining blade of the drawing-pen Awhenever the saine is not required for use, in which case the auxiliary blade is moved back sufficiently so as not to interfere with the regular working of the drawing-pen A. The auxiliary blade O is also provided with a slot f of a size equal to the shank of the set-screw a of the drawing-pen, so that the blade C can be moved forward and backward without interference by the adj Listing-screw a. The head of the screw D is made concave, so as to form a rest for the foreiinger, by which the auxiliary blade is moved forward and backward on the drawing-pen. In the forward position of the blade O its point is in line with the points of the blades of the drawingpenA, as shown in Fig. 3, in which position heavy lines can be produced, while in the backward position of the blade C, as shown in Fig. 2, the blades of the drawing-pen are used in the ordinary manner. By alternately shifting the auxiliary blade forward or backward heavy or light lines can be produced at will, which may also be varied in thickness by adjusting the set=screwD of the auxiliary blade by the finger. By the set-screwsctand E of the drawing-pen and of the auxiliary blade the blades of the drawingpen, as well as the auxiliary blade by which the heavy lines are formed, can be adjusted independently of each other. lVith this pen a drafts man can readily draw alternately light or heavy lines at will, which is of great advann tage for such work in which light and heavy lines alternate frequently, as thereby considerable time can be saved that is lost in ad justing the pen for the different thicknesses of the lines.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination, with a drawing-pen, of an auxiliary blade that is supported parallel with and adapted to be longitudinally shifted alongside of one of the blades of the pen, substantially as set forth.

2. The combination, with a drawing-pen, of an auxiliary blade supported parallel with and adapted to be longitudinally shifted alongside of one of the blades of said pen and a-set-screw for said auxiliary blade, substantially as set forth.

3. The combination of a drawing-pen, an

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auxiliary blade guided alongside of one of the blades of said pen, means for guiding the auxiliary blade on the handle of the pen, and a set-screw for said auxiliary blade, said regulating-screw being provided-With a concave head that is used as a finger-rest, substantially as set forth.

4. The combination of a drawing-pen, an auxiliary blade supported parallel with and adapted to be shifted longitudinally alongside of one of the blades of said pen, means for guiding the auxiliary blade on the handle of the pen, and an auxiliary set-screw for said auxiliary blade, said blade being provided with a slot for the shank of the ordinary setsorew of the drawing-pen, substantially as set forth.

5. The combination of a drawing-pen, a handle having a tubular and longitudinallyslotted portion, an auxiliary blade located sidewise of and parallel with one of the blades of the peu, a guide-piece attached to the shank of the tubular blade and guided in the tubular portion of the handle, and a set-screw for the auxiliary blade, said set-screw engaging the guide-piece, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence lof two subscribing Witnesses.

GEORGE MAYER.

Vitnesses:

PAUL GOEPEL, W. REIMHERR. 

